This is an online lesson associated with activities during Solar Week, a twice-yearly event in March and October during which classrooms are able to interact with scientists studying the Sun. This activity is scheduled to occur during Monday of...(View More) Solar Week. The lesson introduces the concept of astronomical filters and their connections to imaging different objects in space. Learners will explore perceptions of images as seen using different colors of light, construct a filter wheel, and practice investigating various astronomical images using the filter wheel. This material was designed to highlight how filters are useful to astronomers and show how a real astronomical telescope uses filters to image the Sun. Outside of Solar Week, information, activities, and resources are archived and available online at any time.(View Less)

This is a lesson about the Discovery Program's exploration of the solar system. Learners will identify and communicate to others the varied space science explorations carried out by the Discovery Program and dig into one mission in depth. They can...(View More) then respond to a NASA Discovery Program Announcement of Opportunity (AO) to submit a mock proposal. Includes the 29-minute Discovery Program overview video, "Unlocking Mysteries of Our Solar System."(View Less)

Learners will explore how engineers minimize the use of fuel by utilizing gravity. In Activity 1, students explore the physical conservation laws by observing the behavior of balls colliding with other objects. In Activity 2, the students use an...(View More) interactive online simulation tool to explore the various ways in which gravity assists can be used to aid space exploration. Note: The MESSENGER mission to Mercury that is mentioned in this lesson ended operations April 30, 2015. For the latest information about MESSENGER and NASA's solar system missions see the links under Related & Supplemental Resources (right side of this page).(View Less)

This is an activity about the Hubble Deep Field image, an observation of one small area of sky that contained no previously-detected objects. The long time exposure of this image allows us to detect some of the most distant objects seen in our...(View More) Universe. Learners will view an image of the Hubble Deep Field and identify how many distant galaxies are visible as well as the types of galaxies they might be. Observations will be taken a step further to infer predominant age of a galaxy and determine if there are any trends in age (color) versus galaxy size or type and, ultimately, if the distant Universe appears relatively uniform. This activity is Astronomy Activity 4 in a larger resource, titled "Space Update."(View Less)

This is an activity about motion in a frame of reference. Learners will develop an understanding that motion is relative by reading the text "Frames of Reference." As a follow-up to the reading, students engage in a writing-to-learn strategy that...(View More) can help them understand how motion depends on specific frames of reference, as they are asked to assume a specific frame of reference and describe motion in relation to multiple perspectives. This is activity 3 of 5 in "Structure and Properties of Matter: Ion Propulsion."(View Less)

This is a lesson/briefing about the Dawn mission and the significance of its ion propulsion system. Learners will consider cases of science fact versus science fictions, study the challenges of the Dawn mission, and apply the "History Frame"...(View More) strategy to investigate the who, what, when and how in the history and development of ion propulsion. This is activity 1 of 5 in Structure and Properties of Matter: Ion Propulsion.(View Less)

This is a lesson about radiation and the various sources of radiation that a spacecraft may encounter in its journey. Learners will calculate their annual exposure to high-energy radiation, identify sources of high-energy radiation, and explain why...(View More) the near-Mercury environment is a concern for the Mercury MESSENGER mission. This is lesson 2 of 4 in the high school track of a module, titled Staying Cool. Note: the student guide starts on p. 17 of the PDF.(View Less)

This is a activity about how reaction wheels affect spacecraft orientation (attitude). Learners will observe Newton's Third Law (action-reaction) in the changes caused by a reaction wheel acting upon a spacecraft suspended from a support wire and in...(View More) the ensuing interfering forces from the wire support. The experiment includes an option for demonstration and for learner investigation. Notes about gyroscopes are included.(View Less)